That doesn't add up. Let's say that the Patriots* balls (giggle) were checked press game and found to be at "x" psi, and the Colts at "y" psi.
If the pats* were found to be at "x-2" and then the officials proceeded to add 2 lbs of pressure to get it back up to "x", one would have to assume that if the atmosphere played a role, the balls (snicker) when returned to a controlled environment would measure " x+2" psi.
So if they measured "x" psi after the game, they are soooo busted. Especially if they measured the colts balls (chuckle) and they remained at "y" psi.
And to answer your question, the league statement released last week said they reinflated the balls at halftime.